A data mart is a subset of a data warehouse. It stores highly organized data for a particular function or team such as marketing, sales or finance.

A data warehouse stores large quantities of structured data from multiple data sources and transactional systems such as CRMs and ERPs.

A data lake stores a collection of various raw data sets from multiple internal and external data sources. The data can be unstructured, semi-structured or structured.

Database Management System (DBMS) is the software we use to create and manage databases.

A database is the infrastructure that records, stores and organizes your data.